What is the correct pronoun to replace nouns in this sentence Many guests were attracted horse-driven carts?

The correct pronoun to replace "horse-driven carts" in the sentence "Many guests were attracted to horse-driven carts" is them.

Here's why:

* "Horse-driven carts" is plural.

* "Them" is the plural object pronoun.

The sentence would then read: "Many guests were attracted to them."